Which famous building designed by Rafael Viñoly became known as the 'Walkie-Talkie' and the 'Fryscraper' because its concave glass exterior concentrated sunlight so intensely it melted cars?

In architecture, building design isn't just about aesthetics—it's about functionality and safety. Sometimes even the most visually striking buildings can become infamous for their unintended consequences. This poll tests your knowledge of a famous architectural failure that became so problematic it earned a notorious nickname and required extensive retrofitting to solve its dangerous design flaw.

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20 Fenchurch Street in London
Vdara Hotel in Las Vegas
Torre de Cristal in Madrid
The Shard in London